Issue #2279213 by neclimdul, sun | donquixote: Fixed KernelTestBase::unregisterStreamWrapper() is called once with insufficient arguments.

Issue #2284103 by alexpott, fabpot, damiankloip, Xano, Xen, Berdir: Fixed Remove the request from the container.

Issue #2030655 by justafish, Alumei, daffie, alexpott, wwhurley, jamesquinton, pcambra, InternetDevels, rdatar, james_kerrigan: Expand Role with methods.

Issue #697760 by sun: Replace getInfo() in tests with native phpDoc + annotations (following PHPUnit).

Issue #2257519 by sun, larowlan, xjm, cs_shadow: Move content assertion methods into a trait, so DUTB can consume it, too.

Issue #2239969 by znerol, alexpott, neclimdul, sun: Fixed session of (UI) test runner leaks into web tests.

Issue #2234159 by alexpott: Fixed config importing through the UI and change ConfigImportAll test using the UI.

Issue #1452896 by Mile23, marthinal, Freso, kid_icarus, alexpott, tim.plunkett, jhodgdon: Fixed PHP notice in clickLink if link does not exist.

Issue #355157 by valthebald, urbanape: Fixed 302 response code from drupal_redirect_form() violates HTTP/1.1 spec.

Issue #1898452 by joelpittet, amitgoyal, gnuget, steinmb, thedavidmeister, jenlampton, zaphoyd, Cottser, robmc, disasm, azinoman | c4rl: Simpletest.module - Convert theme_simpletest_result_summary functions to Twig.

Issue #2016629 by larowlan, neclimdul, sun, alexpott, jibran, ParisLiakos, donquixote, effulgentsia, msonnabaum: Refactor bootstrap to better utilize the kernel.

Issue #2278541 by tim.plunkett, kim.pepper, Bojhan, EclipseGc: Refactor block visibility to use condition plugins.

Issue #2039449 by joshi.rohit100, joachim, lokapujya, Jalandhar, paulh, yaworsk: Fix docs for assertField methods in WebTestBase to describe how to skip value checking

Issue #2216557 by jhodgdon, mongolito404, Berdir: Fill in @defgroup/topic docs for Testing overview.

Issue #2267159 by juampy, xjm, alexpott: Remove nonexistent parameter from WebTestBase::assertNoLink docs

Issue #2089331 by grom358 | thedavidmeister: [meta] Replace calls to check_plain() with Drupal\Component\Utility\String::checkPlain().

Issue #2246665 by jaredsmith, martin107, YesCT, filijonka, tstoeckler: Typehint with Drupal\Core\Language\LanguageInterface instead Drupal\Core\Language\Language.

Issue #950534 by mparker17, mgifford, Mixologic, jbloomfield, erinclerico, theMusician, wmostrey | zirvap: [policy] Consistently use email instead of e-mail in Drupal.

Issue #2277941 by yched: Allow injecting an arbitrary FieldConfig when building a FieldInstanceConfig.

This reverts commit 2cd0b096.

Revert "Issue #2016629 by larowlan, neclimdul, sun, alexpott, jibran, ParisLiakos, donquixote, effulgentsia, msonnabaum: Refactor bootstrap to better utilize the kernel."

This reverts commit cda051c4.

Issue #2016629 by larowlan, neclimdul, sun, alexpott, jibran, ParisLiakos, donquixote, effulgentsia, msonnabaum: Refactor bootstrap to better utilize the kernel.

This reverts commit 78d18c8d.

Issue #2207377 by sun, xjm: Fixed Bogus "Enabled modules: ." assertions in test results when test enables no modules.

Issue #2183231 by tstoeckler, plach, jessebeach, fago, Berdir, xjm, mauzeh: Make ContentEntityDatabaseStorage generate static database schemas for content entities.

Issue #1959660 by larowlan, pfrenssen, xjm, clemens.tolboom, dawehner, RobLoach: Replace xpath() with WebTestBase::cssSelect() by leveraging Symfony CssSelector.

Issue #2003800 by jhedstrom, filijonka, YesCT, ParisLiakos, steeloctopus, damiankloip, sun, LinL, amateescu: Move drupal_check_memory_limit() and parse_size() functionality to components.